National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Coastal Waters Forecast
Issued by NWS Sterling, VA

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 
237
FZUS51 KLWX 290535
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
135 AM EDT Fri Aug 29 2025

Tidal Potomac River and Maryland portion of Chesapeake Bay.

Forecasts of wave heights do not include effects of wind direction
relative to tidal currents. Expect higher waves when winds are
blowing against the tidal flow.  Waves flat where waters are iced over.

ANZ500-292000-
135 AM EDT Fri Aug 29 2025

.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...

A cold front will cross the waters today. High pressure will return
for the weekend and will continue to influence the area into next
week. Small Craft Advisories may be needed for portions of the
waters tonight.

$$

ANZ535-292000-
Tidal Potomac from Key Bridge to Indian Head-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds around 5 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SUN...NE winds around 5 kt. Waves 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.MON...E winds around 5 kt. Waves 1 ft.
.TUE...E winds around 5 kt. Waves 1 ft.

$$

ANZ536-292000-
Tidal Potomac from Indian Head to Cobb Island-
135 AM EDT Fri Aug 29 2025

.OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves 1 ft.
.SUN...NE winds around 5 kt. Waves 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft.
.MON...E winds around 5 kt. Waves 1 ft.
.TUE...E winds around 5 kt. Waves 1 ft.

$$

ANZ537-292000-
Tidal Potomac from Cobb Island to Smith Point-
135 AM EDT Fri Aug 29 2025

.OVERNIGHT...SW winds 10 kt. Waves 1 to 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves 1 ft.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves 1 ft.
.MON...E winds 5 to 10 kt. Waves 1 ft.
.TUE...E winds 5 to 10 kt. Waves 1 ft.

$$

ANZ530-292000-
Chesapeake Bay north of Pooles Island-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.OVERNIGHT...S winds 10 kt...becoming W late. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...N winds around 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves flat.
.SUN NIGHT...NE winds around 5 kt. Waves flat.
.MON...E winds around 5 kt. Waves flat.
.TUE...E winds around 5 kt. Waves flat.

$$

ANZ531-292000-
Chesapeake Bay from Pooles Island to Sandy Point-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.OVERNIGHT...SW winds 10 kt...becoming W late. Waves 1 to 2 ft.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.FRI NIGHT...NW winds 10 to 15 kt...becoming N late. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 kt. Waves less than 1 ft.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.MON...E winds 5 kt. Waves less than 1 ft.
.TUE...E winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ538-292000-
Patapsco River including Baltimore Harbor-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves flat.
.SAT NIGHT...NE winds around 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves flat.
.SUN NIGHT...NE winds around 5 kt. Waves flat.
.MON...E winds around 5 kt. Waves flat.
.TUE...E winds around 5 kt. Waves 1 ft or less.

$$

ANZ539-292000-
Chester River to Queenstown MD-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.FRI NIGHT...N winds 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves flat.
.MON...E winds around 5 kt. Waves flat.
.TUE...E winds 5 kt. Waves less than 1 ft.

$$

ANZ532-292000-
Chesapeake Bay from Sandy Point to North Beach-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.OVERNIGHT...SW winds 10 to 15 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.FRI NIGHT...NW winds 10 to 15 kt...becoming N late. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 kt. Waves flat.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves 1 ft or less.
.MON...E winds 5 to 10 kt. Waves 1 ft or less.
.TUE...E winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ540-292000-
Eastern Bay-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves flat.
.MON...E winds 5 kt. Waves flat.
.TUE...E winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ533-292000-
Chesapeake Bay from North Beach to Drum Point-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 10 to 15 kt...becoming N late. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 kt. Waves less than 1 ft.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...E winds 5 to 10 kt. Waves 1 ft.
.TUE...E winds 5 to 10 kt. Waves 1 ft.

$$

ANZ541-292000-
Choptank River to Cambridge MD and the Little Choptank River-
135 AM EDT Fri Aug 29 2025

.OVERNIGHT...SW winds 10 kt. Waves 1 to 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves 1 ft or less.
.MON...E winds 5 to 10 kt. Waves 1 ft or less.
.TUE...E winds 5 to 10 kt. Waves 1 ft.

$$

ANZ542-292000-
Patuxent River to Broomes Island MD-
135 AM EDT Fri Aug 29 2025

.OVERNIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves 1 ft.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves 1 ft.
.MON...E winds around 5 kt. Waves 1 ft.
.TUE...E winds around 5 kt. Waves 1 ft.

$$

ANZ534-292000-
Chesapeake Bay from Drum Point to Smith Point-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...SW winds 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 10 to 15 kt...becoming NW 5 to 10 kt in the late
morning and afternoon. Waves 1 to 2 ft.
.FRI NIGHT...NW winds 10 to 15 kt...becoming N late. Waves 1 to
2 ft.
.SAT...N winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...NE winds 5 kt. Waves less than 1 ft.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.MON...E winds 5 to 10 kt. Waves 1 ft.
.TUE...E winds 5 to 10 kt. Waves 1 ft.

$$

ANZ543-292000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
135 AM EDT Fri Aug 29 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...SW winds 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.FRI...W winds 10 to 15 kt...becoming NW 5 to 10 kt in the late
morning and afternoon. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 kt. Waves less than 1 ft.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.MON...E winds 5 to 10 kt. Waves 1 ft.
.TUE...E winds 5 to 10 kt. Waves 1 ft.

$$